The spatial variability of soil properties after land development was studied with geostatistics method. The results showed that the contents of soil organic matter and soil salinity of topsoil decreased, the available P content increased while the available N content changed little due to land development. Especially, once the land was abandoned, the organic matter content of topsoil reduced significantly. The relationships between soil salinity content and the contents of the organic matter, available N and available K were significantly positive correlation, but there was negative correlation between soil salinity content and the available P content in the topsoil of farmland. Therefore, it is necessary for farmland to increase organic manure and supply potassium fertilizer, and could not to be abandoned after land development.